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CN102033383A - Electronic paper device - Google Patents

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CN102033383A
CN102033383A CN2009103076548A CN200910307654A CN102033383A CN 102033383 A CN102033383 A CN 102033383A CN 2009103076548 A CN2009103076548 A CN 2009103076548A CN 200910307654 A CN200910307654 A CN 200910307654A CN 102033383 A CN102033383 A CN 102033383A
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charged particles
charged particle
pixel
pixel unit
charged
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骆颖
谢冠宏
潘俊维
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Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
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Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
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Priority to CN2009103076548A priority Critical patent/CN102033383A/en
Priority to US12/768,702 priority patent/US7839563B1/en
Publication of CN102033383A publication Critical patent/CN102033383A/en
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
    • G09G3/344—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
    • G02B26/026—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light based on the rotation of particles under the influence of an external field, e.g. gyricons, twisting ball displays
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
    • G02F1/167—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/1675—Constructional details
    • G02F1/1679—Gaskets; Spacers; Sealing of cells; Filling or closing of cells
    • G02F1/1681—Gaskets; Spacers; Sealing of cells; Filling or closing of cells having two or more microcells partitioned by walls, e.g. of microcup type
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/34—Colour display without the use of colour mosaic filters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Molecular Biology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

本发明提供一种子纸装置，其包括下基板、电泳层和上基板，该电泳层包括若干像素单元，每个像素单元包括若干收容腔，每个收容腔容纳有电泳液和带电粒子，每个收容腔的带电粒子包括黑色带电粒子和与该黑色带电粒子电性相反的有色带电粒子，每个像素单元包括的有色带电粒子包括红色带电粒子、绿色带电粒子和蓝色带电粒子。本发明的电子纸装置的像素单元包括三原色的带电粒子，通过三原色的带电粒子的混合实现彩色显示。

Figure 200910307654

The invention provides a seed paper device, which includes a lower substrate, an electrophoretic layer, and an upper substrate. The electrophoretic layer includes a plurality of pixel units, and each pixel unit includes a plurality of storage cavities, and each storage cavity contains electrophoretic liquid and charged particles. The charged particles in the accommodation cavity include black charged particles and colored charged particles opposite to the black charged particles, and the colored charged particles included in each pixel unit include red charged particles, green charged particles and blue charged particles. The pixel unit of the electronic paper device of the present invention includes charged particles of the three primary colors, and color display is realized by mixing the charged particles of the three primary colors.

Figure 200910307654

Description

电子纸装置 e-paper device

技术领域technical field

本发明涉及一种电子纸装置，尤其涉及一种电泳显示型的电子纸。The invention relates to an electronic paper device, in particular to an electrophoretic display type electronic paper.

背景技术Background technique

目前，电泳显示型的电子纸主要采用微胶囊(microcapsule)结构和微杯(microcup)结构。微胶囊结构的电子纸包括大致为球形的收容腔，收容腔内容纳有透明的液体，透明的液体中分散有若干带正电荷的白色粒子和若干带负电荷的黑色粒子。在施加电场后，收容腔中的白色粒子和黑色粒子移动，从而形成文字或图像。At present, the electrophoretic display type electronic paper mainly adopts microcapsule (microcapsule) structure and microcup (microcup) structure. The microcapsule-structured electronic paper includes a roughly spherical storage cavity, and a transparent liquid is contained in the storage cavity, and a number of positively charged white particles and a number of negatively charged black particles are dispersed in the transparent liquid. After the electric field is applied, the white particles and black particles in the containment cavity move to form words or images.

微杯结构的电子纸利用微杯阵列容纳电泳液，微杯阵列通过在有透明导电层的塑胶薄膜上涂布压模液体并经连续式微压模制程制作。微杯阵列容纳的电泳液中分布有带正电的白色微粒，在施加电场后，白色微粒移动形成文字或图像。Electronic paper with a microcup structure utilizes a microcup array to contain electrophoretic liquid, and the microcup array is produced by coating a molding liquid on a plastic film with a transparent conductive layer and then undergoing a continuous micro-compression molding process. Positively charged white particles are distributed in the electrophoretic fluid contained in the microcup array, and after an electric field is applied, the white particles move to form text or images.

现在市场上的电子纸装置只能显示黑色和白色，因此，有必要提供可显示多种颜色的电子纸装置。Currently, electronic paper devices on the market can only display black and white. Therefore, it is necessary to provide an electronic paper device that can display multiple colors.

发明内容Contents of the invention

本发明提供一种电子纸装置，其可实现彩色显示。The invention provides an electronic paper device capable of realizing color display.

本发明的电子纸装置包括下基板、电泳层和上基板，该电泳层包括若干像素单元，每个像素单元包括若干收容腔，每个收容腔容纳有电泳液和带电粒子，每个收容腔的带电粒子包括黑色带电粒子和与该黑色带电粒子电性相反的有色带电粒子，每个像素单元包括的有色带电粒子包括红色带电粒子、绿色带电粒子和蓝色带电粒子。The electronic paper device of the present invention includes a lower substrate, an electrophoretic layer, and an upper substrate. The electrophoretic layer includes a plurality of pixel units, and each pixel unit includes a plurality of storage chambers, and each storage chamber contains electrophoretic fluid and charged particles. The charged particles include black charged particles and colored charged particles opposite to the black charged particles, and the colored charged particles included in each pixel unit include red charged particles, green charged particles and blue charged particles.

本发明的电子纸装置的像素单元包括三原色的带电粒子，通过三原色的带电粒子的混合实现彩色显示。The pixel unit of the electronic paper device of the present invention includes charged particles of the three primary colors, and color display is realized by mixing the charged particles of the three primary colors.

附图说明Description of drawings

图1为本发明的电子纸的剖面图。FIG. 1 is a cross-sectional view of the electronic paper of the present invention.

图2显示了图1所示的电子纸的管状容置腔的平面布置图。FIG. 2 shows a plan view of the tube-shaped accommodating cavity of the electronic paper shown in FIG. 1 .

具体实施方式Detailed ways

参考图1，电子纸装置10为反射式电泳显示装置，其包括下基板20、电泳层30和上基板40。电泳层30置于下基板20和上基板40之间。Referring to FIG. 1 , the electronic paper device 10 is a reflective electrophoretic display device, which includes a lower substrate 20 , an electrophoretic layer 30 and an upper substrate 40 . The electrophoretic layer 30 is interposed between the lower substrate 20 and the upper substrate 40 .

下基板20包括基体21和设置于基体21上的若干像素电极22。基体21可为玻璃基板、塑料基板、电路板或柔性电路板。电泳层30通过粘着层50粘接于像素电极22上。The lower substrate 20 includes a base body 21 and several pixel electrodes 22 disposed on the base body 21 . The substrate 21 can be a glass substrate, a plastic substrate, a circuit board or a flexible circuit board. The electrophoretic layer 30 is adhered to the pixel electrode 22 through the adhesive layer 50 .

电泳层30主要由填充材料31构成，填充材料31中形成有若干收容腔32。每个收容腔32与一个像素电极22相对，并且容纳有介电溶液(dielectric solution)和分散于介电溶液中的带电粒子33。在本实施方式中，该若干收容腔32以矩阵式排列，但并不以此为限。收容腔32的数量可根据对电子纸装置10的分辨率的要求确定。The electrophoretic layer 30 is mainly composed of a filling material 31 , and a plurality of accommodating cavities 32 are formed in the filling material 31 . Each accommodating cavity 32 is opposite to one pixel electrode 22 and contains a dielectric solution and charged particles 33 dispersed in the dielectric solution. In this embodiment, the plurality of accommodating cavities 32 are arranged in a matrix, but it is not limited thereto. The number of receiving cavities 32 can be determined according to the resolution requirements of the electronic paper device 10 .

上基板40包括基板41和透明电极42，透明电极42位于基板41和电泳层30之间，其材质可为铟锡氧化物、铝锌氧化物或镉锡氧化物。The upper substrate 40 includes a substrate 41 and a transparent electrode 42 . The transparent electrode 42 is located between the substrate 41 and the electrophoretic layer 30 . The material of the transparent electrode 42 can be indium tin oxide, aluminum zinc oxide or cadmium tin oxide.

当像素电极22和透明电极42之间施加电压差时，收容腔32中的带电粒子33受到驱动而发生移动，带电粒子32的组合形成文字或图像。When a voltage difference is applied between the pixel electrode 22 and the transparent electrode 42 , the charged particles 33 in the accommodation cavity 32 are driven to move, and the combination of the charged particles 32 forms characters or images.

同时参考图2，在本实施方式中，三个收容腔32构成一个像素单元34。每个像素单元34所包含的三个收容腔32均包括黑色带电粒子33a和与带电粒子33a电性相反的有色粒子。在本实施方式中，每个像素单元34所包含的三个收容腔32中的有色粒子分别为红色带电粒子33r、绿色带电粒子33g和黑色带电粒子33b。为了便于说明，将容纳红色带电粒子33r、绿色带电粒子33g和蓝色带电粒子33b的收容腔分别标号为32r、32g和32b。Referring to FIG. 2 at the same time, in this embodiment, three receiving cavities 32 form a pixel unit 34 . Each of the three housing cavities 32 included in each pixel unit 34 includes black charged particles 33 a and colored particles that are electrically opposite to the charged particles 33 a. In this embodiment, the colored particles in the three housing cavities 32 included in each pixel unit 34 are red charged particles 33r, green charged particles 33g and black charged particles 33b. For the convenience of description, the chambers containing the red charged particles 33r, green charged particles 33g and blue charged particles 33b are respectively marked as 32r, 32g and 32b.

在像素单元34中，收容腔32r、32g和32b的排列方式没有限制。例如，在图2中，位于左上角的像素单元34中，从左到右分别为收容腔32r、32g和32b，而位于右下角的像素单元34中，从左到右分别为收容腔32b、32r和32g。In the pixel unit 34 , the arrangement of the receiving cavities 32 r , 32 g and 32 b is not limited. For example, in FIG. 2 , in the pixel unit 34 located in the upper left corner, from left to right are respectively accommodating cavities 32r, 32g and 32b, and in the pixel unit 34 located in the lower right corner, from left to right are respectively accommodating cavities 32b, 32b, and 32b. 32r and 32g.

假设，收容腔32中的黑色带电粒子33a带有正电荷，该收容腔32中有色粒子所带电性与黑色带电粒子33a相反则为负电荷，当透明电极42和像素电极22间施加一正向电压时，收容腔32中的有色粒子和黑色带电粒子33a分别向透明电极42和下基板20移动。当透明电极42和像素电极22间施加一反向电压时，收容腔32中的有色粒子和黑色带电粒子33a分别向下基板20和透明电极42移动。Assuming that the black charged particles 33a in the storage cavity 32 have a positive charge, and the charged properties of the colored particles in the storage cavity 32 are negatively charged as opposed to the black charged particles 33a, when a positive charge is applied between the transparent electrode 42 and the pixel electrode 22 When the voltage is applied, the colored particles and black charged particles 33 a in the storage chamber 32 move to the transparent electrode 42 and the lower substrate 20 respectively. When a reverse voltage is applied between the transparent electrode 42 and the pixel electrode 22 , the colored particles and the black charged particles 33 a in the accommodation cavity 32 move to the lower substrate 20 and the transparent electrode 42 respectively.

以一个像素单元34为例，当与收容腔32r、32b和32g相对的像素电极22和透明电极42分别施加正向电压V1、V2和V3时，收容腔32r、32b和32g中的红色带电粒子33r、绿色带电粒子33g和蓝色带电粒子33b分别向透明电极42移动。若电压差V1、V2和V3相同，则大致相同数量的红色带电粒子33r、绿色带电粒子33g和蓝色带电粒子33b移动至透明电极42附近，根据三原色原理，与像素单元34对应的区域显示为白色。Taking one pixel unit 34 as an example, when the forward voltages V1, V2 and V3 are applied to the pixel electrode 22 and the transparent electrode 42 opposite to the storage cavities 32r, 32b and 32g respectively, the red charged particles in the storage cavities 32r, 32b and 32g 33r, green charged particles 33g, and blue charged particles 33b move toward the transparent electrode 42, respectively. If the voltage differences V1, V2 and V3 are the same, approximately the same number of red charged particles 33r, green charged particles 33g and blue charged particles 33b move to the vicinity of the transparent electrode 42. According to the principle of three primary colors, the area corresponding to the pixel unit 34 is displayed as White.

若电压差V1、V2和V3不同，则不同数量的红色带电粒子33r、绿色带电粒子33g和蓝色带电粒子33b移动至透明电极42附近。因此，根据需要，控制电压差V1、V2和V3的大小以控制移动至透明电极42附近的红色带电粒子33r、绿色带电粒子33g和蓝色带电粒子33b的数量，可在像素单元34对应的区域混合出各种颜色，而这些收容腔32中的黑色带电粒子33a向像素电极22移动，从而可实现电子纸装置10显示彩色的内容。If the voltage differences V1 , V2 and V3 are different, different numbers of red charged particles 33 r , green charged particles 33 g and blue charged particles 33 b move to the vicinity of the transparent electrode 42 . Therefore, according to the needs, the magnitude of the voltage difference V1, V2 and V3 is controlled to control the number of red charged particles 33r, green charged particles 33g and blue charged particles 33b moving to the vicinity of the transparent electrode 42, which can be in the corresponding area of the pixel unit 34. Various colors are mixed, and the black charged particles 33 a in the accommodation cavities 32 move toward the pixel electrodes 22 , so that the electronic paper device 10 can display colorful content.

同样以一个像素单元34为例，当一个像素单元34中的收容腔32r、32g和32b对应的像素电极22与透明电极42之间施加反向电压时，像素单元34中的所有的黑色粒子33a向透明电极42移动，而收容腔32中的有色带电粒子向像素电极22移动，与该像素单元34所对应的区域显示为黑色。Also taking a pixel unit 34 as an example, when a reverse voltage is applied between the pixel electrode 22 and the transparent electrode 42 corresponding to the accommodation cavities 32r, 32g and 32b in a pixel unit 34, all the black particles 33a in the pixel unit 34 Moving to the transparent electrode 42 , the colored charged particles in the storage cavity 32 move to the pixel electrode 22 , and the area corresponding to the pixel unit 34 is displayed in black.

当一个像素单元34中的收容腔32r、32g和32b中部分被施加反向电压时，例如，收容腔32r和32g被施加正向电压，收容腔32b被施加反向电压，收容腔32r和32g中的红色带电粒子33r和绿色带电粒子33g向透明电极42移动，收容腔32b中的黑色带电粒子33a向透明电极42移动。When a reverse voltage is applied to the receiving cavities 32r, 32g and 32b in a pixel unit 34, for example, the receiving cavities 32r and 32g are applied with a forward voltage, and the receiving cavity 32b is applied with a reverse voltage, and the receiving cavities 32r and 32g The red charged particles 33r and green charged particles 33g move to the transparent electrode 42, and the black charged particles 33a in the storage chamber 32b move to the transparent electrode 42.

在本发明中，当像素单元34中的有色带电粒子和黑色带电粒子33a同时位于透明电极42的附近时，由于黑色带电粒子33a不反射光线，上述有色粒子混合出的另一种颜色比较纯正，理由如下：In the present invention, when the colored charged particles in the pixel unit 34 and the black charged particles 33a are located near the transparent electrode 42 at the same time, since the black charged particles 33a do not reflect light, another color mixed by the colored particles is relatively pure. The reasons are as follows:

以色带电粒子33r、绿色带电粒子33g和黑色带电粒子33a在透明电极42的附近为例，假设收容腔32b中的黑色带电粒子33a被其他颜色的带电粒子所代替，由于除黑色之外的其他颜色的带电粒子均会反射光线，从而会对收容腔32r和32g中的红色带电粒子33r和绿色带电粒子33g产生影响。例如，假设收容腔32b中的黑色带电粒子33a被白色带电粒子所代替，由于白色带电粒子会反射白光，该白色粒子、红色带电粒子33r和绿色带电粒子33g混合出浅黄色。Take the colored charged particles 33r, green charged particles 33g and black charged particles 33a near the transparent electrode 42 as an example, assuming that the black charged particles 33a in the accommodation chamber 32b are replaced by charged particles of other colors, because other colors except black The charged particles of different colors will reflect light, thereby affecting the red charged particles 33r and green charged particles 33g in the storage chambers 32r and 32g. For example, assuming that the black charged particles 33a in the storage chamber 32b are replaced by white charged particles, since the white charged particles reflect white light, the white particles, red charged particles 33r and green charged particles 33g are mixed to produce light yellow.

Claims (5)

1. electric paper apparatus, comprise infrabasal plate, electrophoretic layer and upper substrate, it is characterized in that: this electrophoretic layer comprises some pixel cells, each pixel cell comprises some host cavities, each host cavity accommodates electrophoresis liquid and charged particle, the charged particle of each host cavity comprise charged black particles and with the electrical opposite coloured charged particle of this charged black particles, coloured charged particle that each pixel cell comprises comprises red charged particle, green charged particle and blue charged particle.
2. electric paper apparatus as claimed in claim 1 is characterized in that this infrabasal plate comprises some pixel electrodes, and this upper substrate comprises transparency electrode, and this electrophoretic layer is between pixel electrode and transparency electrode.
3. electric paper apparatus as claimed in claim 2 is characterized in that this infrabasal plate comprises matrix, and this matrix is glass substrate, plastic base, circuit board or flexible PCB.
4. electric paper apparatus as claimed in claim 2 is characterized in that this transparency electrode comprises tin indium oxide.
5. electric paper apparatus as claimed in claim 1 is characterized in that this charged black particles has positive charge.
CN2009103076548A 2009-09-24 2009-09-24 Electronic paper device Pending CN102033383A (en)

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Application publication date: 20110427